/*unsigned long AtaTell(AtaFile *pAtaFile)*/
AtaError ATA_tell(AtaFile *pAtaFile, AtaFileSize *pOffsetInFile)
{
AtaState *Ata = pAtaFile->pDrive;
AtaUint32 savedNextBrokenCluster, targetCluster;
AtaUint16 targetWordInCluster;
AtaError ret_stat = ATA_ERROR_NONE;
if (pAtaFile==NULL) return(ATA_ERROR_INVALID_PARAM); //KR042710
/* Save off current NextBrokenCluster, WordInCluster, and Cluster values */
savedNextBrokenCluster = pAtaFile->NextBrokenCluster;
targetCluster = pAtaFile->Cluster;
targetWordInCluster = pAtaFile->WordInCluster;
/* Set pointers back to the beginning of the file */
pAtaFile->NextBrokenCluster = pAtaFile->Cluster = pAtaFile->StartCluster;
pAtaFile->WordInCluster = 0;
*pOffsetInFile = 0;
/* Start searching for the target cluster, adding up the words */
while(pAtaFile->Cluster < targetCluster)
{
*pOffsetInFile += (AtaUint32)(Ata->WordsPerCluster);
if(pAtaFile->Cluster == pAtaFile->NextBrokenCluster)
{
ret_stat = _AtaFindNextBrokenCluster(pAtaFile, 1);
if(ret_stat)
{
/* return((AtaUint32)-1L);*/
/* return(ATA_ERROR_BAD_MEDIA);*/ /*Susmit - Check this*/
return(ret_stat);
}
}
else
{
pAtaFile->Cluster++;
}
}
/* Add the target word offset within the cluster */
*pOffsetInFile += (AtaUint32)targetWordInCluster;
/* Restore current NextBrokenCluster, WordInCluster, and Cluster values */
pAtaFile->NextBrokenCluster = savedNextBrokenCluster;
pAtaFile->Cluster = targetCluster;
pAtaFile->WordInCluster = targetWordInCluster;
return(ATA_ERROR_NONE);
}
AtaError ATA_delete(AtaFile *pAtaFile)
{
int last_cluster;
AtaError ret_stat = ATA_ERROR_NONE;
AtaState *pAtaDrive = pAtaFile->pDrive;
if ((pAtaFile==NULL)||(pAtaDrive==NULL)) return(ATA_ERROR_INVALID_PARAM); //KR042610
pAtaFile->PrevBrokenCluster = pAtaFile->NextBrokenCluster = pAtaFile->Cluster = pAtaFile->StartCluster;
pAtaFile->Filename[0] = '\xE5';
if(_AtaCreate(pAtaFile,2,0))
{
return(1);
}
/*SUSMIT - Directory Delete FAT Updation Bug Fix*/
/* if(pAtaFile->Size!=0) {*/
/* if((pAtaFile->Size!=0)||(pAtaFile->Attributes == ATA_ATTR_DIRECTORY)) {*//*SUSMIT - Directory Attribute Fix*/
if((pAtaFile->Size!=0)||(ATA_isDir(pAtaFile))) {
/*SUSMIT - Directory Delete FAT Updation Bug Fix*/
do
{
/*SUSMIT - New delete change due to modification in _AtaFindNextBrokenCluster*/
/* ret_stat = _AtaFindNextBrokenCluster(pAtaFile,1);*/
ret_stat = _AtaFindNextBrokenCluster(pAtaFile,0);
/*SUSMIT - New delete change due to modification in _AtaFindNextBrokenCluster*/
if(ret_stat == ATA_ERROR_EOF) ret_stat = ATA_ERROR_NONE;
if(ret_stat) return(ret_stat);
ret_stat = _AtaReadFatEntry(pAtaFile->NextBrokenCluster, pAtaDrive, &last_cluster, &pAtaFile->Cluster);
if(ret_stat) return(ret_stat);
ret_stat = _AtaWriteFatEntry(pAtaFile,1);
if(ret_stat) return(ret_stat);
}
while(!last_cluster);
}
start_FAT_cluster=ATA_FIRST_CLUSTER; //KR012210
return(ret_stat);
}
AtaError ATA_deleteLong(AtaFile *pAtaFile)
{
int last_cluster;
AtaError ret_stat = ATA_ERROR_NONE;
AtaUint32 ll;
unsigned short jj = 0;
/*SUSMIT - New LFN Fix*/
AtaUint16 deleteflag = 0;
/*SUSMIT - New LFN Fix*/
AtaState *pAtaDrive = pAtaFile->pDrive;
AtaUint16 *_AtaWriteBuffer = pAtaDrive->_AtaWriteBuffer;
AtaUint32 direntrycounter, dircounterstart = 0;
AtaUint16 entriespersector = pAtaDrive->WordsPerLogSector/16;
AtaUint16 file_cksum = _Ata_lfn_checksum(pAtaFile);
if (pAtaFile==NULL) return(ATA_ERROR_INVALID_PARAM); //KR042610
file_cksum = file_cksum<<8;
file_cksum &= 0xff00;
if(pAtaFile->CurrentDirEntry>20) {dircounterstart = (AtaUint32)(pAtaFile->CurrentDirEntry-20);
dircounterstart-=(AtaUint32)(dircounterstart%entriespersector);}
/*SUSMIT - This magic number 20 comes from the limitation that an LFN can contain max 255
characters & all the entries are contiguous*/
for(direntrycounter = dircounterstart; direntrycounter <= pAtaFile->CurrentDirEntry; direntrycounter += entriespersector) {
ll = _AtaCalculatePhySectorAndOffsetFromDirEntry((AtaUint32)direntrycounter, (AtaUint16 *)&jj, pAtaFile, &ret_stat);
if(ret_stat) return(ret_stat);
ret_stat = _AtaReadSector(ll, pAtaDrive, &_AtaWriteBuffer[0], 0);
if(ret_stat) return(ret_stat);
while(jj<256) {
if((((_AtaWriteBuffer[jj+5]&0xff00) == 0x0F00)||(_AtaWriteBuffer[jj+5] == 0x0FFF))&&(_AtaWriteBuffer[jj+6] == file_cksum))
/*SUSMIT - New LFN Fix*/
{ if(((_AtaWriteBuffer[jj]&0x0040)==0x0040)&&((_AtaWriteBuffer[jj]&0x000f)==(pAtaFile->CurrentDirEntry-(direntrycounter+jj/entriespersector)))) deleteflag = 1;
/*SUSMIT - New LFN deletion modification to save characters*/
/* if(deleteflag){ _AtaWriteBuffer[jj] = '\xE5'; }*/
if(deleteflag){ _AtaWriteBuffer[jj] = (_AtaWriteBuffer[jj]&0xff00)|0x00E5; }
/*SUSMIT - New LFN deletion modification to save characters*/
}
jj+=16;
/*SUSMIT - New LFN Fix*/
}
ret_stat = _AtaFlush(pAtaDrive);
if(ret_stat) return(ret_stat);
ret_stat = pAtaDrive->AtaWriteSector(ll, pAtaDrive->pAtaMediaState, &_AtaWriteBuffer[0], 0);
if(ret_stat) return(ret_stat);
ret_stat = pAtaDrive->AtaWriteSectorFlush(pAtaDrive->pAtaMediaState);
if(ret_stat) return(ret_stat);
}
/*Deletion of 8.3 directory entry & actual file - Susmit*/
pAtaFile->PrevBrokenCluster = pAtaFile->NextBrokenCluster = pAtaFile->Cluster = pAtaFile->StartCluster;
pAtaFile->Filename[0] = '\xE5';
if(_AtaCreate(pAtaFile,2,0))
{
return(1);
}
/*SUSMIT - Directory Delete FAT Updation Bug Fix*/
/* if(pAtaFile->Size!=0) {*/
/* if((pAtaFile->Size!=0)||(pAtaFile->Attributes == ATA_ATTR_DIRECTORY)) *//*SUSMIT - Directory Attribute Fix*/
if((pAtaFile->Size!=0)||(ATA_isDir(pAtaFile)))
/*SUSMIT - Directory Delete FAT Updation Bug Fix*/
{
do
{
/*SUSMIT - New delete change due to modification in _AtaFindNextBrokenCluster*/
/* ret_stat = _AtaFindNextBrokenCluster(pAtaFile,1);*/
ret_stat = _AtaFindNextBrokenCluster(pAtaFile,0);
/*SUSMIT - New delete change due to modification in _AtaFindNextBrokenCluster*/
if(ret_stat == ATA_ERROR_EOF) ret_stat = ATA_ERROR_NONE;
if(ret_stat) return(ret_stat);
ret_stat = _AtaReadFatEntry(pAtaFile->NextBrokenCluster, pAtaDrive, &last_cluster, &pAtaFile->Cluster);
if(ret_stat) return(ret_stat);
ret_stat = _AtaWriteFatEntry(pAtaFile,1);
if(ret_stat) return(ret_stat);
}
while(!last_cluster);
}
return(ret_stat);
}
